Drivers – HP Unified Extensible Firmware Interface User Manual

Page 32

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Options

-b

Displays one screen at a time.

address

Displays memory contents from a specific starting address (in hexadecimal format).

size

Displays memory contents of a specific size (in hexadecimal format).

-MMIO

Displays memory mapped contents using the
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL

.

Description

This command displays the contents of system memory or device memory. If address is not
specified, then the contents of the EFI System Table are displayed. Otherwise, memory starting at
the address is displayed. If size is not specified, then the display defaults to 512 bytes. If -MMIO
is not specified, then main system memory is displayed. Otherwise, device memory is displayed
through the use of the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

Example

To display memory contents from 1af3088 with a size of 16 bytes:

Shell> dmem 1af3088 16
Memory Address 0000000001AF3088 16 Bytes
01AF3088: 49 42 49 20 53 59 53 54-00 00 02 00 18 00 00 00 *IBI SYST........*
01AF3098: FF 9E D7 9B 00 00 *......*

drivers

Displays a list of information for drivers that follow the UEFI Driver Model in the UEFI environment.

Syntax

drivers

[-lxxx] [-sfo]

Options

-lxxx

Displays drivers in a specific language. For a list of possible code options see the UEFI
Specification
.

-sfo

Displays in a standard-format output table. See

Table 7 (page 33)

).

Description

This command displays a list of information for drivers that follow the UEFI Driver Model in the
UEFI environment. For a description of what is listed, see

Table 7 (page 33)

.

Example

To display the driver list:

Shell> drivers
T D
D Y C I
R P F A
V VERSION E G G #D #C DRIVER NAME IMAGE NAME
=== ======= = = = == == ===================================== ==========
39 00000010 D - - 1 - Platform Console Management Driver ConPlatform
3A 00000010 D - - 1 - Platform Console Management Driver ConPlatform
3B 00000010 B - - 1 1 Console Splitter Driver ConSplitter
3C 00000010 ? - - - - Console Splitter Driver ConSplitter
3D 00000010 B - - 1 1 Console Splitter Driver ConSplitter
3E 00000010 ? - - - - Console Splitter Driver ConSplitter
42 00000010 D - - 1 - UGA Console Driver GraphicsConsole
43 00000010 ? - - - - Serial Terminal Driver Terminal
44 00000010 D - - 1 - Generic Disk I/O Driver DiskIo
45 00000010 D - - 1 - FAT File System Driver Fat
48 00000010 ? - - - - ISA Bus Driver IsaBus

32

UEFI Shell command reference

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